Other interpretations are not reasonable because they would imply a windfall in the event of BTC appreciation or a loss in the event of BTC depreciation, neither of which are logical, much less legally permissible.
If you chose to seek to take advantage of a "very stupid" and "very risky" interpretation because you are greedy, you got what you deserved.
"Full BTC Refunds" isn't interpretable in any way. It is what it is no matter how much shit you can eat!
Au contraire, the facts of recent history demonstrate ample confusion over the conflicting interpretations, as well as the superiority of the reasonable and legal one.
"Full" means the full purchase price, which was always in USD. "BTC" means BTC are provided as a pro rata substitute exchange medium for USD.
Your pouty stubborn foot stomping, butthurt anger, and resulting scatological insults only emphasize the paucity of your intellect and argument.